APA (7th ed.) Citation

Du Bois, W. E. B. (1989). The souls of Black folk. Penguin Books.

Chicago Style (17th ed.) Citation

Du Bois, W. E. B. The Souls of Black Folk. New York, N.Y., U.S.A.: Penguin Books, 1989.

MLA (8th ed.) Citation

Du Bois, W. E. B. The Souls of Black Folk. Penguin Books, 1989.